Ismet Sihombing, Erniyanti Erniyanti, Ramlan Ramlan, Soerya Respationo. Juridical Analysis of the Issuance of Sailing Approval Letters at the Municipal Office and Port Authority to Obtain Legal Certainty : Research Study on the Batam Special Port Authority and The Municipal Office. IJSW [Internet]. 2024 Aug. 9 [cited 2026 Mar. 27];1(4):24-38. Available from: https://international.appisi.or.id/index.php/IJSW/article/view/59